EP3414090B1 - Verre feuillete decoratif - Google Patents

Verre feuillete decoratif Download PDF

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Publication number
EP3414090B1
EP3414090B1 EP17707381.4A EP17707381A EP3414090B1 EP 3414090 B1 EP3414090 B1 EP 3414090B1 EP 17707381 A EP17707381 A EP 17707381A EP 3414090 B1 EP3414090 B1 EP 3414090B1
Authority
EP
European Patent Office
Prior art keywords
glass
glass sheet
sheet
laminated glass
textured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17707381.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3414090A1 (fr
Inventor
Julio GARCIA FERNANDEZ
Maria José ALVAREZ-CASARIEGO ALVAREZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Priority to PL17707381T priority Critical patent/PL3414090T3/pl
Publication of EP3414090A1 publication Critical patent/EP3414090A1/fr
Application granted granted Critical
Publication of EP3414090B1 publication Critical patent/EP3414090B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0407—Ornamental plaques, e.g. decorative panels, decorative veneers containing glass elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
    • B44F1/04—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces after passage through surface layers, e.g. pictures with mirrors on the back
    • B44F1/045—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces after passage through surface layers, e.g. pictures with mirrors on the back having mirrors or metallic or reflective layers at the back side

Definitions

  • the present invention relates to the field of decorative glass panels. It relates more particularly to decorative panels for interior applications such as the partitioning of offices, wall coverings, splashbacks, doors and balustrades, or exterior such as facade glazing, privacy screens and solar shading.
  • Glass is a material widely used by architects both for interior design of buildings and for their exterior cladding. There is therefore a continual demand for new products to achieve the aesthetic results desired by architects.
  • Decorative panels are known made up of laminated glass in which fabrics, in particular metallic fabrics are inserted, see for example EP0361872 or WO2010 / 015391 .
  • Such panels are obtained by laminating the fabric between two sheets of flat glass.
  • the fabric must be inserted between the two sheets of glass when manufacturing the laminated glass, at the same time as the lamination interlayer.
  • these panels have several drawbacks.
  • the use of fabrics, in particular metallic fabrics significantly increases not only the weight of the panels but also their cost price.
  • the insertion of an additional functional sheet (the fabric) during manufacture complicates the lamination operations.
  • the present invention provides a decorative glass panel making it possible to overcome the above drawbacks while expanding the choice of aesthetic solutions available. More particularly, the present invention relates to a laminated glass comprising a first sheet of glass, a second sheet of glass and a lamination interlayer between the first sheet of glass and the second sheet of glass; said first glass sheet being a textured glass sheet having a textured inner surface in contact with the lamination interlayer, characterized in that a first reflective coating is disposed between the first glass sheet and the lamination interlayer and a second reflective coating is disposed between the second sheet of glass and the lamination interlayer, the first and second reflective coatings being in direct contact with the inner surface of the first and second sheet of glass, and said laminated glass exhibiting light reflection visible on each of its faces greater than 10%.
  • the laminated glass according to the invention makes it possible to obtain an aesthetic rendering comparable to glass panels comprising a metallic fabric such as those mentioned above, while being freeing from the insertion of a metallic fabric.
  • the laminated glass according to the invention is not limited to this aesthetic rendering and on the contrary allows a wide range of possibilities depending on the combinations of textures of the glass sheets and of the coatings chosen.
  • the laminated glass according to the invention also makes it possible to obtain an asymmetric aesthetic rendering, that is to say a different aesthetic rendering on each of the faces of the laminated glass, by choosing different textures and / or coatings for each of the sheets. of glass.
  • the laminated glass according to the invention uses only three sheets (two sheets of coated glass and a lamination spacer). Compared to other existing solutions such as that of inserting a fabric into a laminated glass, the present invention has an economic advantage not only from the point of view of the cost of raw materials (no additional functional sheet) but also from the point of view. manufacturing cost (the lamination operations necessary for its manufacture do not differ from a conventional lamination process).
  • the laminated glass according to the invention comprises a first sheet of glass having an internal surface in contact with the laminating insert and an external surface opposite to said internal surface.
  • the outer surface of the first sheet of glass is preferably essentially smooth, that is, a surface for which the surface irregularities are such that the radiation incident on the surface is not significantly deflected by these surface irregularities.
  • the outer surface of the first sheet of glass can be partially or fully textured.
  • the inner surface of the first sheet of glass may be partially textured but is preferably fully textured.
  • a textured surface is a surface for which the surface finish varies on a scale greater than the wavelength of the radiation incident on the surface, so that the incident radiation is diffusedly transmitted and reflected by the surface.
  • Texturing the internal surface of the first glass sheet can be obtained by any known texturing process, for example by embossing the internal surface of the glass sheet previously heated to a temperature at which it is possible to deform it, in in particular by rolling by means of a roller having on its surface a texturing complementary to the texturing to be formed on the internal surface of the glass sheet; by abrasion by means of abrasive particles or surfaces, in particular by sandblasting; by chemical treatment, in particular acid treatment; or by etching, optionally using masks to keep at least part of the surface of the substrate untextured.
  • the textured inner surface may be formed by a plurality of patterns recessed or protruding from a general plane of the surface.
  • the textured inner surface may have patterns distributed randomly or periodically.
  • the textured surface of the first sheet of glass typically exhibits a roughness Ra greater than 0.5 ⁇ m, for example from 1 ⁇ m to 2 mm.
  • the textured surface has, for example, a roughness Ra of 1 to 100 ⁇ m (micro-texturing), from 0.3 to 1 mm (mini-texturing) or greater than 1 mm.
  • Examples of directly usable textured glass sheets include the glasses sold by Saint-Gobain Glass in the SGG SATINOVO® range, which have on one of their surfaces a texture obtained by sandblasting or acid attack; glasses sold by Saint-Gobain Glass in the SGG DECORGLASS® range, in the SGG MASTERGLASS® range or in the SGG ALBARINO® range, which have on one of their surfaces a texture obtained by rolling.
  • the laminated glass according to the invention comprises a second sheet of glass having an internal surface in contact with the laminating insert and an external surface opposite to said internal surface.
  • the second sheet of glass may be a sheet of flat glass, in particular a sheet of float glass, that is to say having a smooth internal surface and a smooth external surface.
  • the second glass sheet is preferably also a textured glass sheet having a textured inner surface.
  • the use of two textured glass sheets has the advantage of improving the adhesion of the two sheets to each other by means of the lamination interlayer.
  • the second glass sheet can be defined in the same way as above for the first glass sheet.
  • the second sheet of glass may have a texture identical to the first sheet of glass or, on the contrary, have a texture that is different from the first sheet of glass so that the laminated glass has a different appearance on each of its faces.
  • the first and second sheets of glass can be made of clear or extra clear glass or, on the contrary, can be made of tinted glass, such as yellow, blue, green or bronze glass. They typically each have a thickness of 2 to 20 mm, in particular 3 to 12 mm, for example 4, 6, 8 or 10 mm.
  • a first reflective coating is disposed between the first sheet of glass and the lamination interlayer and a second reflective coating and disposed between the second sheet of glass and the interlayer.
  • the term “reflective coating” is understood to mean a coating exhibiting a reflection of visible light greater than 10%, preferably greater than 15%, more preferably greater than 30%, even more preferably greater than 40%. The reflection of the coating is measured according to ISO 9050: 2003.
  • the first and second reflective coatings are preferably multilayer coatings.
  • multilayer coating means a coating formed by a stack of thin layers, obtained in particular by magnetron cathode sputtering. The first and second coatings are in direct contact with the internal surface of the glass sheets.
  • an element A “in direct contact” with an element B means that no other element is arranged between said elements A and B.
  • an element A “in contact” with an element B does not exclude the presence of another element between said elements A and B.
  • Multilayer coatings typically comprise 2 to 15 thin layers, for example 3 to 7.
  • Each of the first and second coatings preferably comprises at least one functional layer.
  • the term “functional layer” is understood to mean a thin layer which confers light reflection properties on the coating.
  • the functional layer is preferably a nitrided layer, in particular based on niobium nitride, titanium nitride, aluminum nitride or silicon nitride; or a metallic layer, in particular based on silver, gold, titanium, chromium, nickel, copper, tungsten, zirconium, niobium, silicon, aluminum, stainless steel, or their alloys (especially NiCr).
  • the expression “based on” with reference to the composition of a layer means that said layer comprises more than 80%, preferably more than 90%, more preferably more than 95%, by weight of the material concerned.
  • the layer may consist essentially of said material, that is to say comprising more than 99% by weight of said material.
  • the functional layer generally has a thickness of 3 to 50 nm, preferably 5 to 30 nm.
  • Each of the first and second coatings may also include one or more dielectric layers disposed below and / or above the functional layer.
  • the terms “below” and “above”, associated with the position of a first layer relative to a second layer mean that the first layer is closer, respectively further away, from the. sheet of glass as the second layer. These terms do not however exclude the presence of other layers between said first and second layers.
  • the dielectric layer can be an oxide-based layer, such as silicon oxide, titanium oxide, tin oxide or a mixed oxide of tin and zinc, of nitride, such as a aluminum nitride or a silicon nitride, or an oxynitride, such as a silicon oxynitride.
  • the dielectric layer can improve the adhesion of the functional layer.
  • the dielectric layer Arranged above the functional layer, in particular as the last layer of the coating, can serve as a protective layer.
  • the dielectric layers typically have a thickness of 5 to 150 nm, preferably 10 to 50 nm.
  • the coatings can also include a blocking layer below and / or above the functional layer, in particular when the latter is a metallic layer.
  • the blocking layers are generally in direct contact with the functional layer.
  • the blocking layers protect the functional layer from possible degradation during the deposition of a dielectric layer above the functional layer and / or during a possible heat treatment of the bending or toughening type.
  • the blocking layers are generally metallic layers, such as layers based on gold, titanium or NiCr, but which can be partially oxidized and / or nitrided during the deposition of the dielectric layers or possible heat treatments.
  • the blocking layers are generally 0.5 to 2 nm thick.
  • the lamination interlayer is a sheet of thermoformable or pressure sensitive polymer material. It may be, in particular, a lamination interlayer based on polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), polyethylene terephthalate (PET) or polyvinyl chloride (PVC).
  • PVB polyvinyl butyral
  • EVA ethylene vinyl acetate
  • PU polyurethane
  • PET polyethylene terephthalate
  • PVC polyvinyl chloride
  • An EVA-based lamination interlayer is preferred because it facilitates lamination and improves the adhesion of the textured glass sheets to each other.
  • the lamination interlayer generally has a thickness of the order of 0.2 to 1.5 mm, for example around 0.76 mm.
  • the FIG. 1 and 2 illustrate two embodiments of decorative laminated glass according to the present invention.
  • the first glass sheet 1 and the second glass sheet 2 each have respectively a first reflecting coating 3 and a second reflecting coating 4 directly in contact with their internal surfaces 1a and 2a.
  • a lamination interlayer 5 is disposed between the first and second glass sheets 1 and 2.
  • the first glass sheet 1 has a smooth outer surface lb and an inner surface textured.
  • the two surfaces, external 2b and internal 2a, of the second glass sheet 2 are smooth.
  • the second glass sheet 2 has a smooth outer surface 2a and a textured inner surface 2a .
  • the first glass sheet can be obtained, as indicated above, by sandblasting, by acid attack or by etching at least part of at least one face of a sheet of flat glass, in particular a sheet of float glass. However, it is preferably a printed sheet of glass, the texture of the pattern of which of this glass is obtained by rolling the glass casting between two cylinders, at least one of which is serious.
  • the second sheet of glass may be a sheet of flat glass, in particular a sheet of float glass, or a textured sheet of glass obtained in a manner similar to the first sheet of glass.
  • the reflective coatings are deposited on the textured inner surface of the first sheet of glass and on the inner surface, textured or not, of the second sheet of glass.
  • the deposition of the reflective coatings, whether they are single-layer or formed by a multilayer stack, is preferably carried out, under vacuum, by cathode sputtering assisted by a magnetic field (sputtering known as “magnetron cathode”).
  • the lamination interlayer and the second glass sheet are positioned successively, facing the first sheet of glass, so as to present the coatings in contact with the lamination interlayer, and one applies compression and / or heating to the laminated structure thus formed, at least to the glass transition temperature of the lamination interlayer, for example in a press or an oven.
  • the lamination interlayer conforms to the texture of the textured surface of the first sheet of glass, and optionally of the second sheet of glass.
  • the decorative laminated glass according to the invention is preferably a blackout glass. It thus typically exhibits a transmission of visible light on each of its faces of less than 50%, preferably less than 30%, more preferably less than 10%. It also has a reflection of visible light on each of its faces of greater than 10%, preferably greater than 30%, more preferably greater than 50%.
  • Visible light transmission (VLT), or light transmission represents the quantity, expressed in percentage, of incident visible light passing through the laminated glass.
  • Visible light reflection (VLR), or light reflection is the amount, expressed as a percentage, of incident visible light reflected from laminated glass. VLT and VLR are measured according to ISO 9050: 2003.
  • the decorative laminated glass according to the invention can be flat glass or curved glass. It can be used both for interior design of buildings and for their exterior cladding. Applications in building interiors include, for example, office partitions, wall coverings, splashbacks, doors and balustrades. Exterior cladding applications for buildings include, for example, facade glazing, privacy screens, solar shading and balustrades.
  • the present invention also relates to an article comprising a laminated glass as described above, said article being chosen from office partitions, wall coverings, splashbacks, doors, balustrades, facade glazing, breezes. -views and sunscreens.
  • a decorative laminated glass according to the invention was made from two THELA type textured glass sheets from the SGG DECORGLASS® range marketed by the Applicant.
  • a reflective coating consisting of a glass // Si 3 N 4 (30 nm) / NbN (7 nm) / Si 3 N 4 (10 nm) stack was deposited by magnetron sputtering on the textured surface of each of the two sheets of glass.
  • Table 1 The operating conditions for the deposition of each type of thin layer are summarized in Table 1 below: ⁇ u> Table 1 ⁇ /u> Layer Target Pressure Gas If 3 N 4 SiAl 2.5 mTorr N 2 (40%) - Ar (60%) NbN Nb 2.5 mTorr N 2 (40%) - Ar (60%) If 3 N 4 SiAl 3mTorr N 2 (70%) - Ar (30%)
  • the two coated glass sheets were then laminated using an EVA lamination intermediate by placing the coated textured face of each of the glass sheets in contact with the lamination intermediate.
  • the laminated glass thus obtained has, on each of its faces, an appearance comparable to a laminated glass comprising a metallic fabric inserted between two sheets of flat glass. It has a light transmission of 34% and a light reflection of 16% on each of its faces.

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  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Glass (AREA)
EP17707381.4A 2016-02-08 2017-02-06 Verre feuillete decoratif Active EP3414090B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17707381T PL3414090T3 (pl) 2016-02-08 2017-02-06 Dekoracyjne szkło laminowane

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1650965A FR3047439B1 (fr) 2016-02-08 2016-02-08 Verre feuillete decoratif
PCT/FR2017/050262 WO2017137683A1 (fr) 2016-02-08 2017-02-06 Verre feuillete decoratif

Publications (2)

Publication Number Publication Date
EP3414090A1 EP3414090A1 (fr) 2018-12-19
EP3414090B1 true EP3414090B1 (fr) 2020-12-30

Family

ID=56069046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17707381.4A Active EP3414090B1 (fr) 2016-02-08 2017-02-06 Verre feuillete decoratif

Country Status (5)

Country Link
EP (1) EP3414090B1 (pl)
ES (1) ES2843575T3 (pl)
FR (1) FR3047439B1 (pl)
PL (1) PL3414090T3 (pl)
WO (1) WO2017137683A1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3113621B1 (fr) * 2020-08-28 2024-01-19 Saint Gobain Element vitre antisolaire avec reflexion diffuse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661686A (en) * 1967-04-27 1972-05-09 Sierracin Corp Transparent laminated structure of reduced specular reflectance
US20080223436A1 (en) * 2007-03-15 2008-09-18 Guardian Industries Corp. Back reflector for use in photovoltaic device
US20140104690A1 (en) * 2011-01-31 2014-04-17 Saint-Gobain Glass France Transparent element with diffuse reflection
FR3012363A1 (fr) * 2013-10-30 2015-05-01 Saint Gobain Element en couches transparent
US20150138627A1 (en) * 2012-05-25 2015-05-21 Saint-Gobain Glass France Method for projection or back-projection onto glass comprising a transparent layered element having diffuse reflection properties

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8822780D0 (en) * 1988-09-28 1988-11-02 Hickman James A A Wired glass
ES1050635Y (es) * 2001-11-28 2002-08-16 Curvados Cristales Sa Vidrio plurilaminado con lamina decorativa intermedia
DE102008055973A1 (de) * 2008-08-05 2010-02-11 Sefar Ag Flächenstück sowie Verfahren zu dessen Herstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661686A (en) * 1967-04-27 1972-05-09 Sierracin Corp Transparent laminated structure of reduced specular reflectance
US20080223436A1 (en) * 2007-03-15 2008-09-18 Guardian Industries Corp. Back reflector for use in photovoltaic device
US20140104690A1 (en) * 2011-01-31 2014-04-17 Saint-Gobain Glass France Transparent element with diffuse reflection
US20150138627A1 (en) * 2012-05-25 2015-05-21 Saint-Gobain Glass France Method for projection or back-projection onto glass comprising a transparent layered element having diffuse reflection properties
FR3012363A1 (fr) * 2013-10-30 2015-05-01 Saint Gobain Element en couches transparent

Also Published As

Publication number Publication date
FR3047439A1 (fr) 2017-08-11
WO2017137683A1 (fr) 2017-08-17
FR3047439B1 (fr) 2018-03-23
PL3414090T3 (pl) 2021-05-04
EP3414090A1 (fr) 2018-12-19
ES2843575T3 (es) 2021-07-19

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